{
 "id": "supply_chain",
 "title": "Global supply chain pressure and Port of Los Angeles container volume",
 "label": "Public data, not my business",
 "source": "Federal Reserve Bank of New York, Global Supply Chain Pressure Index (GSCPI); Port of Los Angeles, Container Statistics (Historical TEU Statistics by year)",
 "source_urls": {
  "gscpi_page": "https://www.newyorkfed.org/research/policy/gscpi",
  "gscpi_download": "https://www.newyorkfed.org/medialibrary/research/interactives/gscpi/downloads/gscpi_data.xlsx",
  "gscpi_interactive_data_csv": "https://www.newyorkfed.org/medialibrary/research/interactives/data/gscpi/gscpi_interactive_data.csv",
  "gscpi_page_data_json": "https://www.newyorkfed.org/medialibrary/research/interactives/data/gscpi/gscpi.json",
  "newyorkfed_terms_of_use": "https://www.newyorkfed.org/privacy/termsofuse",
  "pola_container_statistics": "https://www.portoflosangeles.org/business/statistics/container-statistics",
  "pola_year_pages": [
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2015",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2016",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2017",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2018",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2019",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2020",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2021",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2022",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2023",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2024",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2025",
   "https://www.portoflosangeles.org/business/statistics/container-statistics/Historical-TEU-Statistics-2026"
  ]
 },
 "license": {
  "gscpi": "New York Fed Terms of Use (last updated 6/9/2023): a non-exclusive license to access, download, copy, distribute and modify the Content, on conditions. Credit line used: \"© 2026 Federal Reserve Bank of New York. Content from the New York Fed subject to the Terms of Use at newyorkfed.org.\" The GSCPI is not an official estimate of the New York Fed, its President, the Federal Reserve System or the FOMC, and it is a product of the New York Fed's Applied Macroeconomics and Econometrics Center. Values here are rounded to 2 decimals (the download has more digits); no other change was made.",
  "pola": "Port of Los Angeles Container Statistics page: \"The information presented on this website is provided free of charge. When sourcing this data, please credit the Port of Los Angeles.\" No formal license text. Used with credit."
 },
 "retrieved": "2026-10-07",
 "period": {
  "gscpi": "January 1998 to September 2026 (345 months)",
  "pola": "January 2015 to August 2026 (140 months)"
 },
 "release": {
  "gscpi": "October 2026 release (the 'Oct-26' column of the NY Fed interactive data), carrying data through September 2026; the NY Fed updates on the fourth business day of each month, which was October 6, 2026 (holidays not checked). NY Fed revises past values every release.",
  "pola": "August 2026 is the latest published month; the port publishes the prior month in the second half of the following month, so September 2026 is expected after the retrieval date."
 },
 "unit": {
  "gscpi": "Index, standard deviations from the series' historical average (0 is the average; positive means supply chain pressure above average)",
  "pola": "TEU (twenty-foot equivalent units), as reported by the port, with quarter-TEU decimals"
 },
 "query": {
  "gscpi": "No API. Downloaded the NY Fed download file (sheet 'GSCPI Monthly Data', 345 months) and took every month, rounded to 2 decimals. Cross-check: every month equals the latest ('Oct-26') column of the NY Fed interactive data CSV at 2 decimals (0 differences). That CSV also lists 4 months from September 1997 that the download omits; they are not used. The latest value and the previous month equal the NY Fed page summary text.",
  "pola": "No API. The monthly tables on the Historical TEU Statistics page for each year 2015 to 2026 (rows January to December; columns Loaded Imports, Empty Imports, Total Imports, Loaded Exports, Empty Exports, Total Exports, Total TEUs, Prior Year Change). empties = Empty Imports + Empty Exports; total = the port's Total TEUs column. The 2014 page was also read, only to check the Prior Year Change column for 2015."
 },
 "caveat": "Two different sources with different timing: the GSCPI runs to September 2026 and the port data to August 2026. GSCPI values are re-estimated every release: compared with the Sep-26 release, 322 of 344 overlapping months differ by more than 0.005 and the largest change is 0.37 (January 1998). The NY Fed says recent months can be revised as actual data replace imputed values, and some inputs revise up to twelve months back. The GSCPI is a summary index of transport costs and manufacturing surveys for several economies, not a count of shipments. Port data cover the Port of Los Angeles only (not Long Beach), count containers (TEU), not value or weight, and recent months can be revised by the port. Empties are mostly empty exports. Public data, not my business.",
 "what_this_shows": [
  "The GSCPI is measured in standard deviations from its own average (NY Fed). It was 1.28 in September 2026 and 1.20 in August 2026 (the previous release had 1.06 for August 2026).",
  "Its highest reading since January 1998 is 4.43 in December 2021; its lowest is -1.56 in May 2023.",
  "Port of Los Angeles container volume was 955,906 TEU in August 2026, -0.26% against August 2025 (958,355 TEU).",
  "Its busiest month in the series is July 2025 (1,019,837 TEU, when the GSCPI read 0.03) and its quietest is March 2020 (449,568 TEU).",
  "Among full calendar years (2015 to 2025), the lowest total is 8,160,458 TEU in 2015 and the highest is 10,677,610 TEU in 2021.",
  "In August 2026, loaded imports were 52.3% of the port's total TEU, loaded exports 12.1% and empty containers 35.6%.",
  "This page shows two public series side by side. It does not show cause and effect between them, any other port, or any business of mine. Public data, not my business."
 ],
 "latest": {
  "gscpi": {
   "month": "2026-09",
   "value": 1.28,
   "previous_month": "2026-08",
   "previous_month_value": 1.2,
   "previous_month_value_in_previous_release": 1.06
  },
  "pola": {
   "month": "2026-08",
   "total": 955906.5,
   "loaded_imports": 500301.5,
   "loaded_exports": 115561.25,
   "empties": 340043.75,
   "prior_year_change_pct": -0.26
  }
 },
 "extremes": {
  "gscpi_max": {
   "month": "2021-12",
   "gscpi": 4.43
  },
  "gscpi_min": {
   "month": "2023-05",
   "gscpi": -1.56
  },
  "pola_total_max": {
   "month": "2025-07",
   "total": 1019837.3
  },
  "pola_total_min": {
   "month": "2020-03",
   "total": 449568.3
  }
 },
 "pola_calendar_year_totals": [
  {
   "year": 2015,
   "total_teu": 8160457.9
  },
  {
   "year": 2016,
   "total_teu": 8856782.8
  },
  {
   "year": 2017,
   "total_teu": 9343192.95
  },
  {
   "year": 2018,
   "total_teu": 9458748.5
  },
  {
   "year": 2019,
   "total_teu": 9337632.4
  },
  {
   "year": 2020,
   "total_teu": 9213395.95
  },
  {
   "year": 2021,
   "total_teu": 10677609.7
  },
  {
   "year": 2022,
   "total_teu": 9911158.85
  },
  {
   "year": 2023,
   "total_teu": 8629681.1
  },
  {
   "year": 2024,
   "total_teu": 10297352.25
  },
  {
   "year": 2025,
   "total_teu": 10239318.4
  }
 ],
 "pola_year_to_date": {
  "year": 2026,
  "through": "2026-08",
  "total_teu": 7038973.25
 },
 "revision_vs_previous_release": {
  "previous_release": "Sep-26",
  "release": "Oct-26",
  "months_compared": 344,
  "months_changed_over_0_005": 322,
  "largest_change": {
   "month": "1998-01",
   "previous": -1.16,
   "now": -0.79
  }
 },
 "checks": {
  "gscpi": "Download equals the Oct-26 column of the interactive data CSV for all 345 months at 2 decimals; no gaps; latest value and previous month equal the NY Fed page summary text.",
  "pola_internal": "Loaded imports + empty imports + loaded exports + empty exports = the total used, within 0.06 TEU, in all 140 months.",
  "pola_port_table_inconsistencies": [
   "2022-11: the port's 'Total Exports' column (327,888.00) differs from loaded plus empty (327,788.00) by +100.00 TEU; 'Total TEUs' agrees with the four components, so the components and Total TEUs are used and 'Total Exports' is not.",
   "2025-03: the port's 'Total Exports' column (391,812.95) differs from loaded plus empty (391,810.95) by +2.00 TEU; 'Total TEUs' agrees with the four components, so the components and Total TEUs are used and 'Total Exports' is not.",
   "2025-10: the port's 'Total Imports' column (429,303.75) differs from loaded plus empty (429,300.75) by +3.00 TEU; 'Total TEUs' agrees with the four components, so the components and Total TEUs are used and 'Total Imports' is not.",
   "2025-10: the port's 'Total Exports' column (419,127.50) differs from loaded plus empty (419,123.50) by +4.00 TEU; 'Total TEUs' agrees with the four components, so the components and Total TEUs are used and 'Total Exports' is not."
  ],
  "pola_total_teus_replaced_by_components": [
   "2020-11: the port's Total TEUs cell is malformed ('889.,748.15'); the sum of the four components is used, and it agrees with the port's calendar-year total for 2020."
  ],
  "pola_annual": "Monthly sums for 2015 to 2025 equal both the port's 'Total Calendar Year' row on each year page and the annual list on the main statistics page (within 1 TEU); 2026 year to date (7,038,973.25 TEU) equals the year page's total row.",
  "pola_prior_year_change": "The port's Prior Year Change column recomputes from the total of the same month a year earlier for all 140 months (within 0.006 percentage points).",
  "pola_latest_month": "August 2026 loaded imports, loaded exports, total empty and total equal the port's Latest Monthly Container Counts table.",
  "pola_layer_file": "all 24 months of data/layers/pola_teu.json (2024-09 to 2026-08) match this file on every field."
 },
 "series_gscpi": [
  {
   "month": "1998-01",
   "gscpi": -0.79
  },
  {
   "month": "1998-02",
   "gscpi": -0.41
  },
  {
   "month": "1998-03",
   "gscpi": -0.12
  },
  {
   "month": "1998-04",
   "gscpi": -0.22
  },
  {
   "month": "1998-05",
   "gscpi": -0.48
  },
  {
   "month": "1998-06",
   "gscpi": -0.76
  },
  {
   "month": "1998-07",
   "gscpi": -0.97
  },
  {
   "month": "1998-08",
   "gscpi": -0.86
  },
  {
   "month": "1998-09",
   "gscpi": -0.94
  },
  {
   "month": "1998-10",
   "gscpi": -0.78
  },
  {
   "month": "1998-11",
   "gscpi": -0.86
  },
  {
   "month": "1998-12",
   "gscpi": -0.67
  },
  {
   "month": "1999-01",
   "gscpi": -0.39
  },
  {
   "month": "1999-02",
   "gscpi": -0.06
  },
  {
   "month": "1999-03",
   "gscpi": -0.31
  },
  {
   "month": "1999-04",
   "gscpi": -0.39
  },
  {
   "month": "1999-05",
   "gscpi": -0.46
  },
  {
   "month": "1999-06",
   "gscpi": -0.44
  },
  {
   "month": "1999-07",
   "gscpi": -0.69
  },
  {
   "month": "1999-08",
   "gscpi": -0.58
  },
  {
   "month": "1999-09",
   "gscpi": -0.47
  },
  {
   "month": "1999-10",
   "gscpi": -0.23
  },
  {
   "month": "1999-11",
   "gscpi": -0.29
  },
  {
   "month": "1999-12",
   "gscpi": -0.3
  },
  {
   "month": "2000-01",
   "gscpi": -0.65
  },
  {
   "month": "2000-02",
   "gscpi": -0.43
  },
  {
   "month": "2000-03",
   "gscpi": -0.35
  },
  {
   "month": "2000-04",
   "gscpi": 0.08
  },
  {
   "month": "2000-05",
   "gscpi": 0.24
  },
  {
   "month": "2000-06",
   "gscpi": 0.0
  },
  {
   "month": "2000-07",
   "gscpi": -0.02
  },
  {
   "month": "2000-08",
   "gscpi": 0.05
  },
  {
   "month": "2000-09",
   "gscpi": 0.03
  },
  {
   "month": "2000-10",
   "gscpi": -0.44
  },
  {
   "month": "2000-11",
   "gscpi": -0.64
  },
  {
   "month": "2000-12",
   "gscpi": -0.87
  },
  {
   "month": "2001-01",
   "gscpi": -0.79
  },
  {
   "month": "2001-02",
   "gscpi": -0.73
  },
  {
   "month": "2001-03",
   "gscpi": -0.5
  },
  {
   "month": "2001-04",
   "gscpi": -0.86
  },
  {
   "month": "2001-05",
   "gscpi": -1.01
  },
  {
   "month": "2001-06",
   "gscpi": -0.65
  },
  {
   "month": "2001-07",
   "gscpi": -0.6
  },
  {
   "month": "2001-08",
   "gscpi": -0.63
  },
  {
   "month": "2001-09",
   "gscpi": -0.61
  },
  {
   "month": "2001-10",
   "gscpi": -1.01
  },
  {
   "month": "2001-11",
   "gscpi": -1.24
  },
  {
   "month": "2001-12",
   "gscpi": -1.1
  },
  {
   "month": "2002-01",
   "gscpi": -0.78
  },
  {
   "month": "2002-02",
   "gscpi": -0.39
  },
  {
   "month": "2002-03",
   "gscpi": -0.42
  },
  {
   "month": "2002-04",
   "gscpi": -0.57
  },
  {
   "month": "2002-05",
   "gscpi": -0.32
  },
  {
   "month": "2002-06",
   "gscpi": -0.64
  },
  {
   "month": "2002-07",
   "gscpi": -0.94
  },
  {
   "month": "2002-08",
   "gscpi": -1.06
  },
  {
   "month": "2002-09",
   "gscpi": -1.13
  },
  {
   "month": "2002-10",
   "gscpi": -1.21
  },
  {
   "month": "2002-11",
   "gscpi": -0.76
  },
  {
   "month": "2002-12",
   "gscpi": -0.72
  },
  {
   "month": "2003-01",
   "gscpi": -0.65
  },
  {
   "month": "2003-02",
   "gscpi": -0.34
  },
  {
   "month": "2003-03",
   "gscpi": -0.37
  },
  {
   "month": "2003-04",
   "gscpi": -0.63
  },
  {
   "month": "2003-05",
   "gscpi": -0.29
  },
  {
   "month": "2003-06",
   "gscpi": -0.19
  },
  {
   "month": "2003-07",
   "gscpi": -0.11
  },
  {
   "month": "2003-08",
   "gscpi": -0.16
  },
  {
   "month": "2003-09",
   "gscpi": -0.05
  },
  {
   "month": "2003-10",
   "gscpi": -0.45
  },
  {
   "month": "2003-11",
   "gscpi": -0.59
  },
  {
   "month": "2003-12",
   "gscpi": -0.5
  },
  {
   "month": "2004-01",
   "gscpi": -0.7
  },
  {
   "month": "2004-02",
   "gscpi": -0.56
  },
  {
   "month": "2004-03",
   "gscpi": -0.12
  },
  {
   "month": "2004-04",
   "gscpi": 0.3
  },
  {
   "month": "2004-05",
   "gscpi": 0.28
  },
  {
   "month": "2004-06",
   "gscpi": 0.32
  },
  {
   "month": "2004-07",
   "gscpi": -0.61
  },
  {
   "month": "2004-08",
   "gscpi": -0.03
  },
  {
   "month": "2004-09",
   "gscpi": -0.11
  },
  {
   "month": "2004-10",
   "gscpi": -0.67
  },
  {
   "month": "2004-11",
   "gscpi": -0.15
  },
  {
   "month": "2004-12",
   "gscpi": 0.02
  },
  {
   "month": "2005-01",
   "gscpi": -0.2
  },
  {
   "month": "2005-02",
   "gscpi": -0.26
  },
  {
   "month": "2005-03",
   "gscpi": -0.38
  },
  {
   "month": "2005-04",
   "gscpi": -1.41
  },
  {
   "month": "2005-05",
   "gscpi": -1.06
  },
  {
   "month": "2005-06",
   "gscpi": -0.95
  },
  {
   "month": "2005-07",
   "gscpi": -0.82
  },
  {
   "month": "2005-08",
   "gscpi": -0.53
  },
  {
   "month": "2005-09",
   "gscpi": 0.04
  },
  {
   "month": "2005-10",
   "gscpi": -0.02
  },
  {
   "month": "2005-11",
   "gscpi": -0.49
  },
  {
   "month": "2005-12",
   "gscpi": -0.61
  },
  {
   "month": "2006-01",
   "gscpi": -0.3
  },
  {
   "month": "2006-02",
   "gscpi": -0.69
  },
  {
   "month": "2006-03",
   "gscpi": -0.34
  },
  {
   "month": "2006-04",
   "gscpi": 0.11
  },
  {
   "month": "2006-05",
   "gscpi": 0.04
  },
  {
   "month": "2006-06",
   "gscpi": 0.15
  },
  {
   "month": "2006-07",
   "gscpi": -0.13
  },
  {
   "month": "2006-08",
   "gscpi": 0.05
  },
  {
   "month": "2006-09",
   "gscpi": -0.68
  },
  {
   "month": "2006-10",
   "gscpi": -0.53
  },
  {
   "month": "2006-11",
   "gscpi": -0.28
  },
  {
   "month": "2006-12",
   "gscpi": -0.5
  },
  {
   "month": "2007-01",
   "gscpi": -0.87
  },
  {
   "month": "2007-02",
   "gscpi": -0.73
  },
  {
   "month": "2007-03",
   "gscpi": -0.62
  },
  {
   "month": "2007-04",
   "gscpi": -0.87
  },
  {
   "month": "2007-05",
   "gscpi": -0.45
  },
  {
   "month": "2007-06",
   "gscpi": -0.42
  },
  {
   "month": "2007-07",
   "gscpi": -0.49
  },
  {
   "month": "2007-08",
   "gscpi": -0.15
  },
  {
   "month": "2007-09",
   "gscpi": -0.07
  },
  {
   "month": "2007-10",
   "gscpi": -0.69
  },
  {
   "month": "2007-11",
   "gscpi": -0.59
  },
  {
   "month": "2007-12",
   "gscpi": -0.2
  },
  {
   "month": "2008-01",
   "gscpi": -0.45
  },
  {
   "month": "2008-02",
   "gscpi": 0.37
  },
  {
   "month": "2008-03",
   "gscpi": 0.1
  },
  {
   "month": "2008-04",
   "gscpi": 0.11
  },
  {
   "month": "2008-05",
   "gscpi": -0.14
  },
  {
   "month": "2008-06",
   "gscpi": 0.24
  },
  {
   "month": "2008-07",
   "gscpi": 0.94
  },
  {
   "month": "2008-08",
   "gscpi": 0.29
  },
  {
   "month": "2008-09",
   "gscpi": -0.49
  },
  {
   "month": "2008-10",
   "gscpi": -0.8
  },
  {
   "month": "2008-11",
   "gscpi": -1.39
  },
  {
   "month": "2008-12",
   "gscpi": -0.64
  },
  {
   "month": "2009-01",
   "gscpi": -0.35
  },
  {
   "month": "2009-02",
   "gscpi": -0.35
  },
  {
   "month": "2009-03",
   "gscpi": 0.23
  },
  {
   "month": "2009-04",
   "gscpi": 0.76
  },
  {
   "month": "2009-05",
   "gscpi": 0.24
  },
  {
   "month": "2009-06",
   "gscpi": -0.54
  },
  {
   "month": "2009-07",
   "gscpi": -0.81
  },
  {
   "month": "2009-08",
   "gscpi": -1.22
  },
  {
   "month": "2009-09",
   "gscpi": -0.62
  },
  {
   "month": "2009-10",
   "gscpi": -0.63
  },
  {
   "month": "2009-11",
   "gscpi": -0.92
  },
  {
   "month": "2009-12",
   "gscpi": -0.73
  },
  {
   "month": "2010-01",
   "gscpi": -0.41
  },
  {
   "month": "2010-02",
   "gscpi": -0.2
  },
  {
   "month": "2010-03",
   "gscpi": 0.27
  },
  {
   "month": "2010-04",
   "gscpi": 0.21
  },
  {
   "month": "2010-05",
   "gscpi": 0.43
  },
  {
   "month": "2010-06",
   "gscpi": -0.01
  },
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